#pragma  once

#include <iostream>
#include <queue>
#include <pthread.h>
#include "LockGuard.hpp"

const int defaultcap=5;

template<class T>
class BlockQueue
{
public:
BlockQueue(int cap=defaultcap)
:_capacity(cap)
{
    pthread_mutex_init(&_mutex,nullptr);
    pthread_cond_init(&_p_cond,nullptr);
    pthread_cond_init(&_c_cond,nullptr);
}
bool IsFull()
{
    return _q.size() == _capacity;
}
bool IsEmpty()
{
    return _q.size() == 0;
}
void Push(const T&in)
{
    LockGuard lockguard(&_mutex);
    while(IsFull())
    {
        pthread_cond_wait(&_p_cond,&_mutex);
    }
    _q.push(in);
    pthread_cond_signal(&_c_cond);
}
void Pop(T*out)
{
    LockGuard lockguard(&_mutex);
    while(IsEmpty())
    {
        pthread_cond_wait(&_c_cond,&_mutex);
    }
    *out=_q.front();
    _q.pop();
    pthread_cond_signal(&_p_cond);
}
~BlockQueue()
{
    pthread_mutex_destroy(&_mutex);
    pthread_cond_destroy(&_p_cond);
    pthread_cond_destroy(&_c_cond);
}
private:
int _capacity;
std::queue<T> _q;
pthread_cond_t _p_cond;
pthread_cond_t _c_cond;
pthread_mutex_t _mutex;
};